Spring-motor for fans



' G. W. TURNER.

SPRING MOTOR FOR FANS. APPLICATION FILED JUNE 8.1920.

1,3 2, 53; Patented Dec; 2 1920.

UNITED STATES PATENT OFFICE.

GEORGE WASHINGTON TURNER, OF ARGENTA, ARKANSAS.

SPRING-MOTOR FOR FANS.

Appli cation filed June 8, 1920. Serial No. 387,320.

T 0 all to 7mm it may concern:

Be it known'that'I, GEORGE WASHINGTON TURNER, residing at Argenta, in the county of Pulaski and State of Arkansas, a c1t1- zen of the United States, have invented certain new and useful Improvements in Spring-Motors for Fans; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in spring motors and more particularly to spring motors for use in operating fans.

It has for its object to provide a motor for fans which is capable of being operated with an exceedingly small amount of energy.

It further has for its object to provide means for automatically starting and stopping the operation of the motor and fan at predetermined times. i

It further has for its object to provide a spring motor for fans which is simple, inexpensive and durable in construction, easy to operate and keep in running order, almost noiseless in operatiomattractive in design,

convenient to use, and which furnishes a maximum amount of power with a minimum output or amount of energy.

It still further has for its object to provide a motor for fans which is capable of being operated without the use of electricity, gas, gasolene, alcohol, and the like and which may be easily and conveniently car ried or transported to any place where it is desired for use.

My invention consists in the several features and in the construction, combination and arrangement of features as more fully hereinafter described and claimed.

Referring to the drawings:

Figure 1 is a front elevation.

Fig. 2 is side elevation with the casing shown in section.

Fig. 3 is an enlarged side view of the timing mechanism and operative means.

Fig. 4 is a side View of the lever operated by the timing mechanism and the lever for braking the motor.

Fig. 5 is a detail enlarged view of the brake lever and the securing or locking means therefor.

In the drawings in which like reference characters denote like parts throughout the several views, 1 represents the casing inclo ing the operative mechanism of the motor of the fan, made of any suitable material and of any desired shape, which is provided at the upper portion or top with an upwardly extending hood or cap 2 in which the shaft carrying the fan 3 is mounted, the hood be ing secured to the casing by means of screws 4, and5 is the base on which the casing is supported or mounted.

A plurality of shafts; 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 are mounted in the casing and 16 and 17 are gears of a train of intermeshing accelerating gears mounted on said shafts; The shaft 14 is provided with a gear 13 having a well known spiral clock operating spring 19 therein and provided with a ratchet 20 on its face and a pawl 21 pivoted to a bracket 22 on the casing engages the ratchet 20. The shaft 15 is provided with a gear 22 which engages the gear 18 and outside the casing a handle is provideddesigned to be placed or fitted on the outer end of the shaft 15 for the purpose of affording means for winding the clockspring 19. The fan 3 is mounted on the outer end of the shaft 6 and is preferably made of such a sizethat it will be above the top of the casing and not project below the bottom portions of the hood 2.

In order to slow down the speed of the fan, or stop it altogether, a friction brake 23 is provided which comprises a friction wheel or disk 24 mounted on shaft (3, and a brake lever 25 pivoted to the hood is adapted to be moved laterally and abut and engage the side of the friction wheel or disk 24, which may be provided with a covering of leather, rubber, or other suitable material to prevent wear on the contacting parts and to assist in maintaining a close contact.- In order to retain and lock the lever 25 in its proper relative position in reference to the friction wheel or disk 24.ratchet teeth 26 are provided on the lower edges of the opening 27 in the hood or cap of the casing which are adapted to be engaged by a tooth 28 depending from the lever 25. A manually operatable forked lever 29 is pivoted between brackets 30 secured on the lower inner porpivotally mounted on a bracket 37, and just below the wheel or disk 2% a lever 38 is provided pivotally mounted on a bracket 39, and 40 is a rod which pivotally connects the ends of the levers referred to.

When the forked lever 29 is manually pushed or moved inward it causes the gears 32 and 33 to engage and the time cam 34 being on the same shaft 31 causes the time cam to rotate and as it rotates the cam portion engages the lever 36 and pushes it downward which causes the lever 38 to be moved upward and engage the periphery of the wheel or disk 24 and thereby stops the motor of the fan until the cam is disengaged from the lever 36 when it starts up again and continues to run until the cam comes around again.

The cam thus operates automatically to start and stop the motor at predetermined times, the length of the interval between the running and stopping of the motor depending on the size of the cam 24:, the larger the cam the longer the motor will run and the smaller the cam the less time it will run. The above operation is for the purpose of affording means for allowing the motor to run for a given length of time, depending as was said before on the size of the cam 34, and then stopping.

- I do not wish to be understood-as limiting myself to the specific details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifications may be made in the featnres of construction and arrangement, in the adaption of the device to various conditions of use without departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all such variations and modifications as properly fall within the scope of my invention and the terms of the following claims.

What I claim is:

1. In a spring motor for fans, a train of gears, means for bringing other gears into engagement with said gears and means operating in connection with the engaged gears for automatically starting and stopping the motor at predetermined intervals of time.

2. In a spring motor for fans, a fan, a train of gears, means for operating said train of gears, means adapted to be thrown into and out of engagement with the teeth of one of said gears, said means provided with a cam for the purpose of causing the motor to start and stop at predetermined intervals of time.

3. In a'spring motor for fans, a fan, a train of gears for operating said fan, a lever provided with a gear, adapted to be thrown into and out of engagement with the train of gearing, and a cam, a lever adapted to be operated by said cam, a brake lever and means for operatively connecting the last named levers for the purpose of causing the motor to start and stop at predetermined intervals of time.

4;. In a spring motor for fans, a fan, a train of gears for operating said fan, a pivoted lever provided with a gear and a cam, said gear adapted to be thrown into and out of engagement with said train of gearing, a lever operated by said cam, a brake disk, a brake lever adapted to engage said disk, and a rod operatively connecting the last named levers for the purpose of causing the motor to start and stop at predetermined inpivoted lever carrying a gear and a cam,

said gear adapted to be thrown into and out of engagement with the gear on the operatable shaft, a lever operatively connected to the brake lever and adapted to be engaged and operated by the said cam and cause the motor to start and stop at predetermined intervals of time.

In testimony whereof I have afiixed my signature.

GEORGE WASHINGTON TURNER. I 

